不同心房起搏比例对常规双腔心脏起搏器发生房性快速性心律失常事件的影响

Effect of different atrial pacing proportions on the incidence of atrial tachyarrhythmias during conventional dual-chamber cardiac pacemaker

目的观察不同心房起搏比例对常规双腔心脏起搏器发生房性快速性心律失常事件的影响。方法选择植入DDD模式永久双腔起搏器患者28例,开启房性快速性心律失常事件记录功能。9例设定累积心房起搏比例>40%(高心房起搏比例组),19例累积心房起搏比例≤40%(低心房起搏比例组)。随访观察(84.5±30.6)d,比较两组患者房性快速性心律失常事件发作次数。结果高心房起搏比例组房性快速性心律失常事件发作次数为132(58.5,248.5)次,与低心房起搏比例组的150(63,232)次相仿(U=81,Z=-0.221,P=0.847)。结论 DDD模式下采用较高的心房起搏比例不一定能减少房性快速性心律失常事件的发生。

Objective To observe the effect of different atrial pacing proportions on the incidence of atrial tachyarrhythmias during conventional dual-chamber cardiac pacemaker.Methods The implantation of permanent dual-chamber cardiac pacemaker was performed in 28 patients,of whom the high atrial pacing proportion was set up in 9 cases (cumulative atrial pacing proportion 40%,group HAPP)and the low atrial pacing proportion was set up in 19 cases (cumulative atrial pacing proportion ≤40%,group LAPP).The atrial tachyarrhythmias events were recorded during follow up of (84.5±30.57)days.Results The median of atrial tachyarrhythmias episodes in group HAPP was 132 times (58.5 times,248.5 times)and that in group LAPP was 150 times (63 times, 232 times),which was not significantly different between two groups (U=81,Z=--0.221, P=0.847).Conclusion The higher atrial pacing proportion could not reduce the incidence of atrial tachyarrhythmias episodes in the patients undergoing conventional DDD mode dual-chamber pacing.